Abstract
The deffects such as pitts, streaks and cracks on the surface of electrodeposited iron are mainly caused by the hydrogen evolution ensued from iron deposition. Some observations and examinations on the effects of compositions of electrolytic baths, of additions of surface active agents and of current operations were carried out.
The effects of addition salts in FeSO4 base electrolytic bath are relatively small, but the addition of surface active agent in the bath causes the lowering of the surface tension, and makes easy the liberation of hydrogen from the cathode. It was found after sevelal observations and examinations that the addition of some surface active agent shows smooth and pittless plane and the current operation with this bath is suitable for practical use.
Therefore, the author finds out a new methode of iron electrolytic refining in which the process of cathode moving with the traditional methode is brought to useless.
